{
  "cveId": "CVE-2024-43491",
  "url": "https://patchblox.com/security/cve/CVE-2024-43491",
  "summary": "CVE-2024-43491 is fixed in 2 products on 1 platform, first by KB5043083, released September 10, 2024. The vendor reports it is being exploited. Patch Radar priority: Patch now.",
  "title": "Microsoft Windows Update Remote Code Execution Vulnerability",
  "description": "\u003Cp\u003EMicrosoft is aware of a vulnerability in Servicing Stack that has rolled back the fixes for some vulnerabilities affecting Optional Components on Windows 10, version 1507 (initial version released July 2015). This means that an attacker could exploit these previously mitigated vulnerabilities on Windows 10, version 1507 (Windows 10 Enterprise 2015 LTSB and Windows 10 IoT Enterprise 2015 LTSB) systems that have installed the Windows security update released on March 12, 2024\u2014KB5035858 (OS Build 10240.20526) or other updates released until August 2024. All later versions of Windows 10 are not impacted by this vulnerability.\u003C/p\u003E\n\u003Cp\u003EThis servicing stack vulnerability is addressed by installing the September 2024 Servicing stack update (SSU KB5043936) AND the September 2024 Windows security update (KB5043083), in that order.\u003C/p\u003E\n\u003Cp\u003ENote: Windows 10, version 1507 reached the end of support (EOS) on May 9, 2017 for devices running the Pro, Home, Enterprise, Education, and Enterprise IoT editions. Only \u003Ca href=\u0022https://learn.microsoft.com/en-us/lifecycle/products/windows-10-2015-ltsb\u0022\u003EWindows 10 Enterprise 2015 LTSB\u003C/a\u003E and \u003Ca href=\u0022https://learn.microsoft.com/en-us/lifecycle/products/windows-10-iot-enterprise-ltsb-2015\u0022\u003EWindows 10 IoT Enterprise 2015 LTSB\u003C/a\u003E editions are still under support.\u003C/p\u003E",
  "published": "2024-09-10T12:00:00Z",
  "severity": "Critical",
  "cvss": 9.8,
  "cwe": "Use After Free",
  "epss": 0.12916,
  "epssPercentile": 0.96335,
  "priority": "Patch now",
  "priorityTier": 1,
  "exploited": true,
  "vendorExploited": true,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation Detected",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43491",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Windows 10 for 32-bit Systems",
      "fixedVersion": "10240.20766",
      "fix": "KB5043083",
      "url": "https://patchblox.com/security/fix/microsoft/kb5043083",
      "released": "2024-09-10T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 for x64-based Systems",
      "fixedVersion": "10240.20766",
      "fix": "KB5043083",
      "url": "https://patchblox.com/security/fix/microsoft/kb5043083",
      "released": "2024-09-10T00:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}